Imperial Historian said:
The seguleh second is "missing", now presumably he must have left under his own power, and it's concievable he could have run into dassem, or someone equally skilled, and with the whole seguleh culture of fighting anyone who you think might be better than you if the heirachy is in any doubt, challenged him and presumably been killed or I'd doubt he'd still be missing.
Dassem or someone else then becomes seguleh second without ever having visited the seguleh isle. With the assumption that traveller=dassem, or is travelling aorund, it's possible with the whole convergence thing that they would have come into contact with each other at some point.
As to the increasing levels of power thing... I don't buy that, conflict between seguleh ensues when one refuses to show deference ot the other, so if dassem had bumped into the second and refused to show deference they'd have fought right then and there, i don't think you'd have to fight through all the intermediate levels...
Im sorry I forgot to add that Rake was a foreigner to the island and so obviously the Selugh had no way of judging his skill. Therefore they might attacked in terms of rank I suppose. With Dassem what you say is entirely plausiable.
The reason why I don't believe it is Dassem, is because that would mean too many identities for one different individual. But then again I could be completely wrong and it is Dassem and he became 2nd through one of his many travels. Nevertheless for now I'd like to stay away from that theory, just so things stay a little less complicated.